Results 121 to 130 of about 7,689 (293)

Second law analysis of the ideal Ericsson magnetic refrigeration

, 2011
One of the main challenges of the industry today is to face its impact on global warming considering that the greenhouse effect problem is not be solved completely yet. Magnetic refrigeration represents an environment-safe refrigeration technology.
Lucia, Umberto, Umberto Lucia
core   +1 more source

A High Energy Barrier DyIII2 Single‐Molecule Magnet Supported by a Bulky, Anionic N–O Bridging Ligand

Chemistry – A European Journal, EarlyView.
Complex [Dy2(hynad)2(dbm)4] was prepared by the employment of the anionic N–O‐based bridging and chelating N‐hydroxy‐1,8‐naphthalimide ligand, featuring a {Dy2(µ‐OR)2}4+ core and exhibiting zero‐field SMM behavior with a Ueff value of 171 K and double‐S‐shaped hysteresis loops, open up to 3.5 K.
Alexandros S. Armenis, Concepción Molina‐Jirón, Konstantinos N. Pantelis, Wolfgang Wernsdorfer, Mario Ruben, Eufemio Moreno‐Pineda, Theocharis C. Stamatatos   +6 more
wiley   +1 more source

The Magnetocaloric Properties and Critical Behavior of (Gd₄Co₃)_100−xGe_x Rapidly Quenched Alloys

Metals
Gd4Co3 is a promising magnetocaloric material with a high magnetic entropy value. However, it undergoes a first-order magnetic transition, which hinders practical applications.
Xichun Zhong, Yaxiang Wu, Haongya Yu, Zhongwu Liu   +3 more
doaj   +1 more source

Magnetic Refrigerant Materials for Hydrogen Liquefaction by Active Magnetic Regenerative Refrigeration

TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan), 2023
Akiko T. SAITO, Hiroyuki TAKEYA, Takafumi D. YAMAMOTO, Koji KAMIYA, Koichi MATSUMOTO, Takenori NUMAZAWA   +5 more
openaire   +1 more source

Tetradecanuclear {Ni9Ln5} Clusters Featuring Encapsulated {Ln5} Trigonal Bipyramids: Modular 3d‐4f Architectures With Broad‐Range Magnetocaloric Response

Chemistry – A European Journal, EarlyView.
The use of 2‐aminoisobutyric acid in 3d–4f chemistry affords three {Ni₉Ln5} clusters, with the Gd analogue exhibiting an unusually broad magnetocaloric effect across an extended temperature range. ABSTRACT The solvothermal reaction between Ni(HCOO)2.2H2O, 2‐aminoisobutyric acid (aibH), Ln(OAc)3·4H2O (Ln = Gd, Y, Dy) and NEt3 in MeOH/MeCN affords the ...
Thomais G. Tziotzi, Evangelia G. Asmargiannaki, Ben Thamm, Scott J. Dalgarno, Emmanouil K. Charkiolakis, Marc Ubach I. Cervera, David Gracia, Marco Evangelisti, Constantinos J. Milios   +8 more
wiley   +1 more source

Magnetocaloric Effect in 3D Gd(III)-Oxalate Coordination Framework

Nanomaterials
Cryogenic magnetic refrigerants based on the magnetocaloric effect (MCE) hold significant potential as substitutes for the expensive and scarce He-3. Gd(III)-based complexes are considered excellent candidates for low-temperature magnetic refrigerants ...
Fang-Wen Lv, Mei-Xin Hong, Xue-Ting Wang, Haiquan Tian, Chun-Chang Wang, Xiu-Ying Zheng   +5 more
doaj   +1 more source

Performance comparison of magnetic refrigeration cycles [PDF]

, 1990
Magnetic refrigeration has been used for cryogenic cooling at temperatures near absolute zero for many years. In these cases, a single-step adiabatic demagnetization method that does not provide continuous refrigeration is commonly used.
Chen, G. L., Murphy, R. W., Mei, V. C., Chen, F. C.   +3 more
core  

Exploring Calixarene‐Based Pseudorotaxane Architectures: Threading Ammonium Axles With an Exo‐Rim π‐Functionalized Calix[6]Arene Macrocycle

Chemistry – A European Journal, EarlyView.
This research presents a novel 1,4‐π‐functionalized calix[6]arene with enhanced interactions with dialkylammonium axles. We investigate threading behavior in CDCl3, highlighting how exo‐rim π‐functionalization affects binding affinity and stereoselectivity.
Veronica Iuliano, Paolo Della Sala, Placido Neri, Donato De Simone, Rocco Del Regno, Margherita De Rosa, Carmine Gaeta, Carmen Talotta   +7 more
wiley   +1 more source

A Methodology to Integrate Closed‐Cycle Heat Pumps into Batch Distillation Columns

Chemie Ingenieur Technik, EarlyView.
Batch distillation often cannot use vapor recompression due to contamination risks in food and pharma. This study proposes a design for integrating closed‐loop heat pumps using natural fluids. Results show significant energy savings, offering a sustainable alternative to traditional setups.
Philipp Dorn, Michael Libuda, Thomas Meyer, Christian Hoffmann, Jens‐Uwe Repke, Stefan Elbel   +5 more
wiley   +1 more source

Relation between 4f-magnetism and the low-temperature magnetocaloric effect in multiferroic hexagonal manganites

Communications Materials
The magnetocaloric effect enables magnetic refrigeration and plays an important role for cooling at cryogenic temperatures, which is essential for emergent technologies such as hydrogen liquefaction and quantum computing. Here, we study the origin of the
Ruben Dragland, Catalina Salazar Mejía, Ingvild Hansen, Yosuke Hamasaki, Elvia Anabela Chavez Panduro, Yoshitaka Ehara, Tino Gottschall, Dennis Meier, Jan Schultheiß   +8 more
doaj   +1 more source